Systems, methods, and instrumentalities are disclosed for a wireless transmit/receive unit (WTRU) to determine rank, offset, or inter-stream interference control information, for example, which may be associated with uplink MIMO operations. A method to control a WTRU may include receiving a special E-RNTI that is associated with a channel. The channel may be associated with a rank indication. The channel may be an E-AGCH-like channel. The channel may have a similar encoding structure as an E-AGCH. The channel may be an E-ROCH. The channel may be received, and it may be determined that the channel is associated with the special E-RNTI. At least one of a rank or an offset may be determined, and the WTRU may be configured with the determined rank or offset. An inter-stream interference (ISI) offset may be received, for example, via RRC signaling, and may be applied to an uplink transmission of a primary stream.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method to control a wireless transmit receive unit (WTRU), the method comprising: receiving an enhanced radio network temporary identifier (E-RNTI) and a special E-RNTI, wherein the E-RNTI is associated with an enhanced absolute grant channel (E-AGCH) and the special E-RNTI is associated with an enhanced rank and offset channel (E-ROCH), the E-ROCH comprising a rank indication; receiving the E-ROCH; determining that the E-ROCH is associated with the special E-RNTI; and determining a rank based on the rank indication, wherein the rank indication indicates a maximum allowable number of multiple-input and multiple-output (MIMO) layers for transmission.
2. The method of claim 1 , wherein encoding of the E-ROCH is related to E-AGCH encoding.
3. The method of claim 2 , wherein the E-ROCH has the same encoding chain as an E-AGCH.
4. The method of claim 1 , wherein determining that the E-ROCH is associated with the special E-RNTI comprises decoding the E-ROCH.
5. The method of claim 1 , wherein determining that the E-ROCH is associated with the special E-RNTI comprises: decoding the E-ROCH, performing a cyclic redundancy check (CRC) on the decoded E-ROCH utilizing the special E-RNTI, and determining that the E-ROCH is associated with the special E-RNTI.
6. The method of claim 1 , further comprising: determining an offset; and determining a transport block size of a secondary stream of a dual-stream transmission using the offset.
7. The method of claim 6 , further comprising: determining a transport block size of a secondary stream of a dual-stream transmission using the offset.
8. The method of claim 1 , further comprising configuring the WTRU with the determined rank.
9. The method of claim 1 , further comprising receiving an inter-stream interference (ISI) offset.
10. The method of claim 9 , wherein the ISI offset is received via radio resource control (RRC) signaling.
11. The method of claim 9 , further comprising applying the ISI offset to an uplink transmission of a primary stream of a dual-stream transmission.
12. A wireless transmit receive unit (WTRU) comprising: a processor configured to: receive an enhanced radio network temporary identifier (E-RNTI) and a special E-RNTI, wherein the E-RNTI is associated with an enhanced absolute grant channel (E-AGCH) and the special E-RNTI is associated with an enhanced rank and offset channel (E-ROCH), the E-ROCH comprising a rank indication; receive the E-ROCH; determine that the E-ROCH is associated with the special E-RNTI; and determine a rank based on the rank indication, wherein the rank indication indicates a maximum allowable number of multiple-imput and multiple-output (MIMO) layers for transmission.
13. The WTRU of claim 12 , wherein encoding of the E-ROCH is related to E-AGCH encoding.
14. The WTRU of claim 13 , wherein the E-ROCH has the same encoding chain as an E-AGCH.
15. The WTRU of claim 12 , wherein the processor is configured to decode the E-ROCH to determine that the E-ROCH is associated with the special E-RNTI.
16. The WTRU of claim 12 , wherein to determine that the E-ROCH is associated with the special E-RNTI, the processor is configured to: decode the E-ROCH, perform a cyclic redundancy check (CRC) on the decoded E-ROCH utilizing the special E-RNTI, and determine that the E-ROCH is associated with the special E-RNTI.
17. The WTRU of claim 12 , wherein the processor is further configured to determine an offset, and determine a transport block size of a secondary stream of a dual-stream transmission using the offset.
18. The WTRU of claim 17 , wherein the processor is further configured to determine a transport block size of a secondary stream of a dual-stream transmission using the offset.
19. The WTRU of claim 12 , wherein the processor is further configured to configure the WTRU with the determined rank.
20. The WTRU of claim 12 , wherein the processor is further configured to receive an inter-stream interference (ISI) offset.
21. The WTRU of claim 20 , wherein the ISI offset is received via RRC signaling.
22. The WTRU of claim 20 , wherein the processor is further configured to apply the ISI offset to an uplink transmission of a primary stream of a dual-stream transmission.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
January 28, 2013
August 15, 2017
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.